Year	Percent
1997-01-01	113.18400000000000
1998-01-01	123.45299999999999
1999-01-01	123.45299999999999
2000-01-01	123.45299999999999
2001-01-01	53.93710000000000
2002-01-01	58.92740000000000
2003-01-01	57.39210000000000
2004-01-01	67.00070000000000
2005-01-01	78.60540000000000
2006-01-01	96.60130000000000
2007-01-01	109.79500000000000
2008-01-01	117.64500000000000
2009-01-01	134.29600000000000
2010-01-01	132.48400000000000
2011-01-01	132.73200000000000
2012-01-01	130.96600000000000
2013-01-01	128.15900000000000
2014-01-01	133.19500000000000
2015-01-01	125.88600000000001
2016-01-01	114.27799999999999